import Vue from 'vue'
import Router from 'vue-router'
import Login from '@/components/Login.vue'
import Home from '@/components/Home.vue'
import Welcome from '@/components/welcome/welcome.vue'
import Users from '@/components/user/users.vue'
import Roles from '@/components/power/roles.vue'
import Rights from '@/components/power/rights.vue'

Vue.use(Router)

const router = new Router({
  mode: 'hash',
  // mode: 'history',
  base: process.env.BASE_URL,
  routes: [
    {
      path: '/login',
      name: 'Login',
      component: Login
    },
    {
      path: '/home',
      name: 'Home',
      component: Home,
      redirect: '/welcome',
      children: [
        { path: '/users', component: Users },
        { path: '/welcome', component: Welcome },
        { path: '/roles', component: Roles },
        { path: '/rights', component: Rights }
      ]
    }
    // {
    //   path: '/about',
    //   name: 'about',
    //   // route level code-splitting
    //   // this generates a separate chunk (about.[hash].js) for this route
    //   // which is lazy-loaded when the route is visited.
    //   component: () => import(/* webpackChunkName: "about" */ './views/About.vue')
    // }
  ]
})

// 挂载路由导航守卫
router.beforeEach((to, from, next) => {
  // to 将要访问的路径
  // from 代表从哪个路径跳转而来
  // next 是一个函数，表示放行
  // to.path 具体路径来源
  if (to.path === '/login') return next()
  // 获取token
  const tokenStr = window.sessionStorage.getItem('token')
  if (!tokenStr) return next('/login')
  next()
})

export default router
